XD's are +P rated (all of them), the XD 45 is one of the few that will fire the LaMas ammo (REALLY hot military loads...new stuff) without any modifications, just take it out of the box, clean it, load it and shoot it.
An XD will chew up and spit out more +P or +P+ rounds than most are willing shoot...ever.
Mine has seen quite a few 45 Super loads, no signs of excessive or accelerated wear anywhere.